inflammatory process improves, FDG uptake should be diminished, at least in the affected vessels. This was confirmed in the two patients for whom we have a follow-up F18-FDG-PET. Nevertheless, this pathophysiological basis can cause some false-positive results, as FDG uptake can occur in atherosclerotic lesions with an accumulation of inflammatory cells. Usually these images are less clearly po...

UNLABELLED A 55-year-old patient, who had undergone excisional biopsy of upper lip two years ago and diagnosed to have squamous cell carcinoma, was referred to us for evaluation with Fluorine-18 fluorodeoxyglucose (F-18 FDG) positron emission tomography (PET)/CT (F-18 FDG-PET/CT) scan. F-18 FDG-PET/CT scan was performed and the maximum intensity projection images (MIP) showed unusual FDG uptake...

BACKGROUND AND PURPOSE Dual-head coincidence gamma camera (DHC) imaging has been proposed as an alternative to dedicated ring-detector positron emission tomography (dr-PET) for clinical fluorodeoxyglucose (FDG) studies. The purpose of this investigation was to assess the quality of DHC images in FDG studies of the human brain. METHODS Seven healthy volunteers and 12 patients with various cere...

UNLABELLED Chemotherapy is currently the treatment of choice for patients with high-risk metastatic breast cancer. Clinical response is determined after several cycles of chemotherapy by changes in tumor size as assessed by conventional imaging procedures including CT, MRI, plain film radiography, or ultrasound. The aim of this study was to evaluate the use of sequential 18F-FDG PET to predict ...

A 60-year-old woman under treatment with letrozole for metastatic breast cancer underwent 18F-FDG PET-CT for restaging. A new widespread intense splenic FDG uptake without nodular lesions and multiple FDG-avid mediastinal and abdominal nodes were observed. Based on these findings, a nodal and transbronchial lung biopsy was performed. Histological results were compatible with sarcoidosis. The pa...

An F-FDG-PET with CT scan was performed to stage a tongue cancer, revealing the hypermetabolic region in the thoracic vertebra. This corresponded to a benign lesion seen on MRIs and CT.Although these findings suggested a vertebral hemangioma, "hot" vertebra in FDG-PET was atypical. The final diagnosis was confirmed capillary hemangioma by the scopic biopsy and this lesion was no change at 1 yea...

depicted on T2WI, ADC map, and fused FDG-PET (top row, arrow). Dynamic 18F-FDG PET images reconstructed at multiple time-points during 30 minute acquisition demonstrate progressive FDG uptake (bottom row). Hybrid PET/MRI incorporating Dynamic 18F-FDG PET Imaging: Correlation with Biopsy Findings-Preliminary Observations Andrew B Rosenkrantz, Anne-Kristin Vahle, Christian Geppert, Christopher Gl...

An incidental finding of an intense focus of (18)F-Fluorodeoxyglucose (FDG) pulmonary uptake on positron emission tomography (PET) without detectable lesions on computed tomography (CT) is highly suggestive of FDG microembolus. Its microscopic nature means it is undetectable on CT. It is an artefact attributable to (18)F-FDG-tracer contamination at the injection site. This paper reports a case ...

Fig. 1. The PET/CT scan was performed 70 min after intravenous injection of 363 MBq (9.8 mCi) of F-FDG. Maximum intensity projection (A), axial PET (B, E), PET/CT fusion (C, F) and CT (D, G) at level of upper abdominal and thoracic images showed a large right adrenal mass (60 × 45 mm dimensions, 44 HU) without any significant FDG uptake (SUVmax: 1.8) (open arrows) and increased FDG uptake in a ...